Is TAP Air Portugal the first airline to announce regular flights to South Africa?  On the home page of its website you will now see this image:

It announces Cape Town as a new destination with flights to Lisbon starting from R15,034 return.   The first flight from Cape Town departs on November 12, 2020.  You can book now at https://www.flytap.com/en-za/

And TAP is pet-friendly, you can take your dog in the cabin (or the hold) with you.